Duplo Train Track Connector

This is not a a replacement or addition for LEGO Duplo Train-Tracks. It just so happens that my kid confuses the different toys and uses them side by side. But kids are kids :D

This flat plane allows to firmly connect 2 building block or train track elements together.

Thanks to the low profile, 2 segments build up in the air allow a train to pass under it:

Source-File (FreeCAD) included.